Numbness and tingling: causes, warning signs & what to do
"Pins and needles" or numbness usually means a nerve is compressed or irritated. Most is temporary, but sudden or spreading numbness can be serious.
Common causes of numbness and tingling
- A trapped nerve (e.g. carpal tunnel, sciatica)
- Sitting/lying in one position too long
- Vitamin B12 deficiency
- Diabetes (nerve damage)
- Thyroid problems
- Nerve or spinal conditions; rarely, stroke or MS
When to see a doctor urgently
- Sudden numbness/weakness on one side, face droop or slurred speech — call your local emergency number now (stroke)
- Numbness around the groin with bladder/bowel changes
- Rapidly spreading numbness or weakness
- Numbness after a significant neck/back injury
Frequently asked questions
Why do my hands go numb at night?
A common cause is carpal tunnel syndrome — pressure on a wrist nerve. It often improves with a splint; persistent symptoms should be assessed.
When is numbness an emergency?
Sudden numbness or weakness on one side, with face droop or speech trouble, can be a stroke — call emergency services immediately.
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MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.